3KYV:
reference: Unambiguous determination of H-atom positions: comparing results from neutron and high-resolution X-ray crystallography., Gardberg AS, Del Castillo AR, Weiss KL, Meilleur F, Blakeley MP, Myles DA, Acta Crystallogr D Biol Crystallogr. 2010 May;66(Pt 5):558-67. Epub 2010, Apr 21. PMID: 20445231

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